Infrasound-based Gas Pipeline Leak Monitoring System

Pipeline transportation have these advantages of large traffic, thrift investment, low loss, continuous and automation transport. Because of these advantages, pipeline transportation, highways, railways, water and air can be called the five transport sector. As a necessary part of a modern society, the gas pipeline takes unpredictable dangers into every house. With the gas pipeline aging and vandalism, gas pipeline accident occur frequently, and it causes tremendous harm. It is why that gas pipeline leak monitoring system has become a hot spot in society.But every system have the shortages in methods. These shortages are no real-time, imprecise, and inefficient in monitor. So this paper studies a new gas pipeline leak monitoring system according to research variety of previous literature. The main ones are as follows:First, this paper introduces variety of monitor methods in society. Then this paper analysis the basic principles of the real-time monitoring of the pipeline leak and proposes the distribution network framework based on infrasound monitoring.Second, the system analysis the basic positioning theory of real-time monitoring,and research analysis algorithm and related iterative algorithms to determine pipeline leakage situation.Then system verificates three algorithms by simulation of the leak location results.Third, the monitor system uses the auxiliary sensor which can improve the accuracy of signal acquisition. This system also uses GPS module for data transmission and time correction.Finally, the paper studies the system simulation. In the MATLAB software platform, the system processing the signal which is produced by ANSYS software. The results show that this system has improved the accuracy of monitor.